That can be reversed, as: Finished so that either side can be used: a reversible fabric. Wearable with either side turned outward: a reversible skirt; a reversible vest. Chemistry & Physics Capable of assuming or producing either of two states: a reversible cell; a reversible reaction. Chemistry & Physics Of or relating to a process, such as a chemical reaction or a phase change, in which the system undergoing the process can be returned to its original state. A reversible fabric or item of clothing.